Move and rename RenderBR to LayoutBR.

LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt

Index: LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt
diff --git a/LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt b/LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt
index 660874042c3495ede5826fdd4aa1cd4ebe6f86f6..aa60cec333bbfb92ec835d9262e302168b5a13e9 100644
--- a/LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt
+++ b/LayoutTests/platform/win/tables/mozilla/bugs/bug4382-expected.txt
@@ -6,7 +6,7 @@ layer at (0,0) size 800x600
       RenderBlock (anonymous) at (0,0) size 784x18
         RenderText {#text} at (0,0) size 270x17
           text run at (0,0) width 270: "The select should not contain blank items "
-        RenderBR {BR} at (269,14) size 1x0
+        LayoutBR {BR} at (269,14) size 1x0
       RenderBlock {FORM} at (0,18) size 784x22
         RenderInline {B} at (0,0) size 48x17
           RenderText {#text} at (0,2) size 48x17
@@ -22,10 +22,10 @@ layer at (0,0) size 800x600
               text run at (4,1) width 37: "Excite"
         RenderText {#text} at (0,0) size 0x0
       RenderBlock (anonymous) at (0,56) size 784x36
-        RenderBR {BR} at (0,0) size 0x17
+        LayoutBR {BR} at (0,0) size 0x17
         RenderText {#text} at (0,18) size 270x17
           text run at (0,18) width 270: "The select should not contain blank items "
-        RenderBR {BR} at (269,32) size 1x0
+        LayoutBR {BR} at (269,32) size 1x0
       RenderBlock {FORM} at (0,92) size 784x20
         RenderMenuList {SELECT} at (0,0) size 253x20 [bgcolor=#FFFFFF] [border: (1px solid #A9A9A9)]
           RenderBlock (anonymous) at (1,1) size 251x18